Note I've marked an alternative left hand fingering here, using the third finger to fret the A at the 12th fret. This reduces the necessary hand movement, but you should make sure that you get the sound consistent between both fingers.

I've only notated the most basic of rhythms here. Playing it straight will give the heaviest sound, but the riff may be looped indefinitely

so try shifting the rhythm around. You should be able to make the two hand parts "bounce off each other".

The notes we're playing are taken from the chords Am, G and F as follows

(The Major and minor chords are differentiated by the notes I've indicated as "o" (little "o") — we're not playing those yet. You may like to analyse how this works)

Double Stopping will help to thicken the sound, but the basic problem with this riff is that if you play this, then nobody is playing the bass part! That's fine for a while, but not exactly great for the big intense ending.

The answer of course is to split your hands, and use the left hand to play the bass line one octave below where we've being playing it:

This is will take some getting used to — particularly those of you who have been looking at the fretboard, as you can't watch both hands at once (I did warn you!). The only answer is familiarity with the bass — learning to feel your way round. Don't worry if you can't get this right now, but keep it in mind as something to practise, alongside future lessons.

The new chords may be written:

|————————————————14——|———12———|———10————|||————————————————14——|———12———|———10————|||————————————————————|————————|—————————|||————————————————5———|———3————|———1—————||(Again I've marked notes that are implied as "o", played notes as "O"). Its pretty obvious why it sounds better.

Once you have mastered the splitting of your hands, you may like to try the first riff again with the bass line an octave down:

Particular effort must be put into playing the F at the first fret of the E string — Hammering on requires a little more effort close to the nut, as there is less available movement from the string (it being anchored not very far away). You may have to hit the string just a little harder (or those with rapid detuning machanisms may take the string down a tone — Kubickis are great for this, as the nut is moved while the note remains in the same place).

While very basic, these riffs are in fact quite hard, and should be enough to keep you occupied for quite a while.